I can, therefore I am.

Do not weep do not wax indignant. Understand.

The wise does at once what the fool does at last.

To know oneself, one should assert oneself.

It's always too early to quit.

You never know what motivates you.

Be thine own palace, or the world's thy jail.

The dog that trots about finds a bone.

Leap, and the net will appear.