Time stays long enough for anyone who will use it.

Time abides long enough for those who make use of it.

Anyone who conducts an argument by appealing to authority is not using his intelligence; he is just using his memory.

He who wishes to be rich in a day will be hanged in a year.

For once you have tasted flight you will walk the earth with your eyes turned skywards, for there you have been and there you will long to return.

Life well spent is long.