Those who cannot work with their hearts achieve but a hollow, half-hearted success that breeds bitterness all around.

Nothing is more intolerable than to have to admit to yourself your own errors.

A proverb is much matter distilled into few words.

Man is the only creature who refuses to be what he is.

The trouble with most of us is that we would rather be ruined by praise than saved by criticism.

Never put off for tomorrow, what you can do today.

Attachment is the great fabricator of illusions; reality can be attained only by someone who is detached.

He that cannot reason is a fool. He that will not is a bigot. He that dare not is a slave.

Each problem that I solved became a rule which served afterwards to solve other problems.

We never see ourselves as others see us.

Wrong life cannot be lived rightly.

Desire, ignorance, and inequality—this is the trinity of bondage.

Adapt what is useful, reject what is useless, and add what is specifically your own.

Do not pray for an easy life, pray for the strength to endure a difficult one.

Never do anything when you are in a temper, for you will do everything wrong.

Science may set limits to knowledge, but should not set limits to imagination.

Almost every wise saying has an opposite one, no less wise, to balance it.

Turn your wounds into wisdom.

An understanding of the natural world is a source of not only great curiosity, but great fulfilment.

Tact is the knack of making a point without making an enemy.

The absent are never without fault, nor the present without excuse.