10 inspirational carl sagan quotes on success

For small creatures such as we, the vastness is bearable only through love.
Every one of us is, in the cosmic perspective, precious.
We are like butterflies who flutter for a day and think it is forever.
Somewhere, something incredible is waiting to be known.
The brain is like a muscle. When it is in use we feel very good. Understanding is joyous.
Science is not only compatible with spirituality; it is a profound source spirituality.
One glance at a book and you hear the voice of another person, perhaps someone dead for 1,000 years. To read is to voyage through time.
The nitrogen in our DNA. The calcium in our teeth, the iron in our blood, the carbon in our apple pies were made in the interiors of collapsing stars. We are made of starstuff.
The total number of stars in the universe is larger than all the grains of sand on all the beaches of the planet Earth.
If we continue to accumulate only power and not wisdom, we will surely destroy ourselves.