It's always too early to quit.

Things do not happen. Things are made to happen.

Quality is not an act, it is a habit.

Do not weep do not wax indignant. Understand.

I can, therefore I am.

Problems are not stop signs, they are guidelines.

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

What you do today can improve all your tomorrows.

To know oneself, one should assert oneself.