Imagination is more important than knowledge. For knowledge is limited, whereas imagination encircles the world.
In the middle of difficulty lies opportunity.
Try not to become a man of success, but rather try to become a man of value.
Life is like riding a bicycle. To keep your balance, you must keep moving.
The only source of knowledge is experience.
A person who never made a mistake never tried anything new.
Strive not to be a success, but rather to be of value.
The important thing is not to stop questioning. Curiosity has its own reason for existing.