I can, therefore I am.

Problems are not stop signs, they are guidelines.

It's always too early to quit.

Be gentle to all and stern with yourself.

Leap, and the net will appear.

To know oneself, one should assert oneself.

Go for it now. The future is promised to no one.

Begin to be now what you will be hereafter.

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