740 Quotes by Stephen Hawking

Try to make sense of what you see and wonder about what makes the universe exist. Be curious, and however difficult life may seem, there is always something you can do, and succeed at. It matters that you don’t just give up.

One of the most serious consequences of our actions is global warming brought about by rising levels of carbon dioxide from the burning of fossil fuels. The danger is that the temperature increase might become self-sustaining if it has not done so already.

One, remember to look up at the stars and not down at your feet. Two, never give up work. Work gives you meaning and purpose and life is empty without it. Three, if you are lucky enough to find love, remember it is there, and don’t throw it away.

The increase of disorder or entropy with time is one example of what is called an arrow of time, something that distinguishes the past from the future, giving a direction to time.

It is a waste of time to be angry about my disability. One has to get on with life and I haven't done badly. People won’t have time for you if you are always angry or complaining.

A possible way to reconcile time travel with the fact that we don't seem to have had any visitors from the future would be to say that such travel can occur only in the future.

To my mathematical brain, the numbers of planets in the universe make thinking about aliens perfectly rational.

In some histories space-time will be so warped that objects like rockets will be able to travel into their pasts.

Space creatures might not be visiting Earth with peaceful intentions.