Ideapodさんのイラストまとめ

These quotes from Carl Sagan will make you feel at one with the cosmos: https://t.co/JZmu5sE3h3

Don't worry, be happy! The surprising benefits of optimism: https://t.co/AQlW5NVJzP

How Carl Sagan Described Death To His Young Daughter: http://t.co/vch0V2r9Gk

How Optimism and Anxiety Change the Structure of Your Brain: http://t.co/RaGc78bABg