Morgan Freeman

If you live a life of make-believe, your life isn't worth anything until you do something that does challenge your reality. And to me, sailing the open ocean is a real challenge, because it's life or death.

American Actor

William James

Truth lives, in fact, for the most part on a credit system. Our thoughts and beliefs pass, so long as nothing challenges them, just as bank-notes pass so long as nobody refuses them.

American Philosopher

Ryan Reynolds

We might be too proud to admit it as guys, but we still need to learn how to manage responsibility, how to face our challenges.

Canadian Actor

Wilma Rudolph

Later on in life, I discovered that in order for me to be successful, I had to have a challenge. I can't do a nine to five job.

American Athlete

Donald Rumsfeld

Enjoy your time in public service. It may well be one of the most interesting and challenging times of your life.

American Politician

Joseph Campbell

Opportunities to find deeper powers within ourselves come when life seems most challenging.

American Author

Les Brown

Our ability to handle life's challenges is a measure of our strength of character.

American Speaker

Bette Davis

The key to life is accepting challenges. Once someone stops doing this, he's dead.

American Actress

Nelson Mandela

To deny people their human rights is to challenge their very humanity.

South African Statesman

Venus Williams

Life's a challenge, but that's the best part.

American Tennis Player

Use 'challenge' to describe situations needing extra effort and determination.

Effort Required

'Challenge' often implies a problem has an achievable solution.

Problem Solving

Challenges can be seen as opportunities for personal growth or improvement.

Growth Opportunities

Use the verb 'challenge' when someone is invited to compete.

Competition Invitation

'Challenge' can express questioning or resisting authority or norms.

Authority Questioning

A 'challenge' can be a friendly request to engage in a specific activity or game.

Engagement Request

You can accept or decline a 'challenge' based on your willingness or capacity.

Response Choice

In legal contexts, 'challenge' means to formally question the validity of something.

Legal Disagreement

In academic or intellectual discussions, 'challenge' refers to questioning ideas or theories.

Academic Debate

 So, we're calling this one Spot for the time being and this one Stripe. And he tends to have a little bit more of a feisty character than his brother. He is going to be a challenge, I can see it already. See what I mean about being stroppy? Aren't you? Yeah. That's good, you've got spirit.

Handraising Twin Tiger...

 The bigger the challenge becomes, the bigger the brain's signal grows, and the more motor units it rallies to help you achieve your task. But what if the door is made of solid iron? At this point, your arm muscles alone won't be able to generate enough tension to pull it open,

What makes muscles grow?...

 The causes are complex, and consequently, diagnosing and living with bipolar disorder is a challenge. Despite this, the disorder is controllable. Certain medications like lithium can help manage risky thoughts and behaviors by stabilizing moods.

What is bipolar...

 But again, I'm really trying to dig deep, challenge myself, find that voice and kind of honor it. A huge part of why we feel the ocean is so powerful with grief, is that she embodies this kind of endless abyss that can hold all of us.

Surf Sisters - Ep. 2 PIPE...

 and caring for others, like psychotherapy or practicing compassion towards others, can be helpful. The difficulty is it can be challenging for people with narcissistic personality disorder to keep working at self-betterment.

The psychology of...

 You will certainly see it again. But also be sensitive to it in your own life. Listen for your call to adventure. Accept the challenge. Conquer your fear and claim the treasure you seek. And then, do it all over again.

What makes a hero? -...

 can in fact carve out a common future for themselves and for the world? In short, can we carve out a future which is peaceful and mutually prosperous, or are we looking at a great challenge

Are China and the US...

 and at least 2.5 billion times during an average lifetime. That may sound like an insurmountable amount of pressure, but don't worry, your arteries are well suited for the challenge.

How blood pressure works...

 to learn the game in the beginning it was only a game for me but it became gradually competitive it suited very much to my character as from a very early age I love challenges by

Giving checkmate is...

 every test they face hones skills they'll need later in life but one challenge stops them in their tracks a giant petrol