Be gentle to all and stern with yourself.
Who seeks shall find.
To know oneself, one should assert oneself.
Never complain and never explain.
Always desire to learn something useful.
Do not weep do not wax indignant. Understand.
I can, therefore I am.
Only the educated are free.
Without hard work, nothing grows but weeds.
If you're going through hell, keep going.
The human imagination has already come to conceive the possibility of recreating human society.
The product of the scientific imagination is a new vision of relations - like that of artistic imagination.