Photography takes an instant out of time, altering life by holding it still.
All relationships change the brain - but most important are the intimate bonds that foster or fail us, altering the delicate circuits that shape memories, emotions and that ultimate souvenir, the self.
The greatest discovery of my generation is that a human being can alter his life by altering his attitudes.
Everything we do is for the purpose of altering consciousness. We form friendships so that we can feel certain emotions, like love, and avoid others, like loneliness. We eat specific foods to enjoy their fleeting presence on our tongues. We read for the pleasure of thinking another person's thoughts.
Man can alter his life by altering his thinking.
Human beings can alter their lives by altering their attitudes of mind.
Just as human activity is upsetting Earth's carbon cycle, our actions are altering the water cycle.
These are the soul's changes. I don't believe in ageing. I believe in forever altering one's aspect to the sun. Hence my optimism.
My first ideas of human in vitro fertilization (IVF) arose with my Ph.D. in Edinburgh University in the early 1950s. Supervised by Alan Beatty, my research was based on his work on altering chromosomal complements in mouse embryos.
There are events which are so great that if a writer has participated in them his obligation is to write truly rather than assume the presumption of altering them with invention.