“The pursuit of science leads only to the insoluble.”

There is moderation even in excess.

The secret of success is constancy to purpose.

Two nations between whom there is no intercourse and no sympathy; who are as ignorant of each other’s habits, thoughts, and feelings, as if they were dwellers in different zones, or inhabitants of different planets. The rich and the poor.

Change is inevitable. Change is constant.

Time is precious, but truth is more precious than time.

Finality is not the language of politics.

Everyone likes flattery; and when you come to Royalty you should lay it on with a trowel.

The secret of success is to be ready when your opportunity comes.

To be conscious that you are ignorant of the facts is a great step to knowledge.

In a progressive country change is constant; change is inevitable.

Every man has a right to be conceited until he is successful.

Be amusing: never tell unkind stories; above all, never tell long ones.

Almost everything that is great has been done by youth.

Diligence is the mother of good fortune.

As a general rule, the most successful man in life is the man who has the best information.

Silence is the mother of truth.

Climate change is a huge problem, an almost insoluble problem.