You cannot afford to gamble your youth only for fun.

Mixing old wine with new wine is stupidity, but mixing old wisdom with new wisdom is maturity.

Beginner knows rules, but veterans know exceptions.

While you keep ageing, your experience compensates for your lost brain power.

Old ones should respect the energy of youths and youths should respect the experience of old ones.

When your youth is about to enter in old age it shouldn't wonder, what happened? it must say, well done.

I don't like museums, I like labs.