If humanity doesn't land on Mars in my lifetime, I would be very disappointed.
It will never rain roses when we want to have more roses we must plant more trees.
So long as the memory of certain beloved friends lives in my heart, I shall say that life is good.
Until you're ready to look foolish, you'll never have the possibility of being great.
Sleep is that golden chain that ties health and our bodies together.
Observe good faith and justice toward all nations. Cultivate peace and harmony with all.
One never reaches home, but wherever friendly paths intersect the whole world looks like home for a time.
Humour brings insight and tolerance. Irony brings a deeper and less friendly understanding.
Have nothing in your house that you do not know to be useful, or believe to be beautiful.
A happy life must be to a great extent a quiet life, for it is only in an atmosphere of quiet that true joy dare live.