科学中最重要的工具不是显微镜,而是思维。
Gratitude can transform common days into thanksgivings, turn routine jobs into joy, and change ordinary opportunities into blessings.
热闹的场合可以锻炼心境,安静可以养心,坐时可以守心,行动时可以考验心灵,言时省心,动时制心。