Isaac Newton

It is indeed a matter of great difficulty to discover, and effectually to distinguish, the true motions of particular bodies from the apparent because the parts of that immovable space, in which those motions are performed, do by no means come under the observation of our senses.

English Mathematician

John C. Calhoun

To make a division of power effectual, a veto in one form or another is indispensable. The right of each to judge for itself of the extent of the power allotted to its share, and to protect itself in its exercise, is what, in reality, is meant by a division of power.

American Statesman

Adam Smith

The real and effectual discipline which is exercised over a workman is that of his customers. It is the fear of losing their employment which restrains his frauds and corrects his negligence.

Scottish Economist

George Washington

I beg you be persuaded that no one would be more zealous than myself to establish effectual barriers against the horrors of spiritual tyranny, and every species of religious persecution.

American President

Joseph Barber Lightfoot

Try to help others. Consult their weaknesses, relieve their maladies; strive to raise them up, and by so doing you will most effectually raise yourself up also.

English Theologian

Isaac Barrow

He who loveth a book will never want a faithful friend, a wholesome counsellor, a cheerful companion, or an effectual comforter.

Ida B. Wells

The appeal to the white man's pocket has ever been more effectual than all the appeals ever made to his conscience.

American Activist

Edmund Burke

No passion so effectually robs the mind of all its powers of acting and reasoning as fear.

Irish Statesman

John Adams

The essence of a free government consists in an effectual control of rivalries.

Aesop

Persuasion is often more effectual than force.

Greek Author

Use 'effectual' to describe methods that successfully achieve goals, not just attempt them.

Desired Outcome

'Effectual' also implies that the method is not only successful, but done with efficiency.

Emphasizing Efficiency

'Effectual' carries a positive nuance, suggesting the technique or process is commendable.

Positive Connotation

Use 'effectual' in legal contexts to emphasize the enforcement power or binding nature of an agreement.

Legal Strength

An 'effectual' law or agreement is one that is not only written but is also recognized and actionable.

Beyond Intent

'Effectual' suggests a document has the power to compel or require action, not just to guide it.

Power of Compliance

 a century has passed since Washington wrote to be prepared for war is the most effectual means of promoting the peace