Motivation truly is important. You can keep going longer and focus harder on the mission if you can internally narrativize your intellectual life as a glorious search for freedom, enfranchisement of the weak, human progress, etc. Such energies can't be thrown away completely.
动机确实很重要。如果你能在内心将你的思想生活描述为对自由的光荣追求、对弱者的特权、人类进步等，你可以继续走得更远，更加专注于任务。这些能量不能被完全抛弃。