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

It's always too early to quit.

If you're going through hell, keep going.

Quality is not an act, it is a habit.

I can, therefore I am.

By failing to prepare, you are preparing to fail.

Do not weep do not wax indignant. Understand.

You never know what motivates you.

To know oneself, one should assert oneself.