But the watchful care of the parent is endless. The youth is never free from the danger of grating interference.

The philosophy of the wisest man that ever existed, is mainly derived from the act of introspection.

Soundness of understanding is connected with freedom of enquiry; consequently, opinion should, as far as public security will admit, be exempted from restraint.

Superior virtue must be the fruit of superior intelligence.

What is man's ultimate direction in life? It is to look for love, truth, virtue, and beauty.

There is no greater privilege in living than bringing a tiny new human being into the world and then trying to raise him or her properly during the next eighteen years. Doing that job right requires all the intelligence, wisdom, and determination you will be able to muster from day to day.

Any observations from the Moon or a sense of realising this or that about the greater meaning of things wasn't as influential for me as the experience of coming back and dealing with being a person who's been to the Moon.

The fact that my mother's life was cut short is something that pushes me to always move forward and live the best life I possibly can. In a way, I feel like I can take her along with me through every experience, and in that sense, her beautiful energy and spirit will live on.