A man's moral worth is not measured by what his religious beliefs are but rather by what emotional impulses he has received from Nature during his lifetime.

The series of integers is obviously an invention of the human mind, a self-created tool which simplifies the ordering of certain sensory experiences.

True religion is real living; living with all one's soul, with all one's goodness and righteousness.

...behind all the discernible laws and connections, there remains something subtle, intangible and inexplicable.

The future is of greater interest to me than the past, since that is where I intend to spend the rest of my life.

The fear of death is the most unjustified of all fears, for there's no risk of accident for someone who's dead.

Intelligence is not the ability to store information, but to know where to find it.