"In the days of thy youth seek..." - Quote by Leonardo Da Vinci

“It is the infinite alone that cannot be attained, for if it could it would become finite.”

“Experience never errs; it is only your judgments that err by promising themselves effects such as are not caused by your experiments.”

“A clever man without wisdom is like a beautiful flower without fragrance.”

“Beautiful young people are accidents of nature, but beautiful old people are works of art.”

“The younger you are, the more experimenting you should do. But once you've found what you were created to do, stick with it.”

“Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young.”

“What the object of senile avarice may be I cannot conceive. For can there be anything more absurd than to seek more journey money, the less there remains of the journey?”

“It is our duty, my young friends, to resist old age.”

“An intemperate, disorderly youth will bring to old age, a feeble and worn-out body.”