The reason why I picked Hashirama is because he told the generation after his to be prepared for War by saying this:
"Whenever you live, there will always be war."
And then told people what it means to be a Hokage or a Kage:
"The fellow countrymen of the Konoha make up each part of my body… those of the village believe in me, and I believe in them. That's what it means to be Hokage!"
Also, gave kakashi his best quote:
"Those who stray from the path of justice have no courage, but under the wing of a strong leader, cowardice cannot survive."
xD
Tobirama is the second best because of this:
He told Saru (Hiruzen) about the will of fire and how it works and he himself followed it:
"Listen Saru. Guide the people, and believe in them, for it's from among them that one will come who will carry on when your time is done."
And He also told him what it means to be a hokage:
"Saru, you must protect those who have faith in you and who love the village, and train up to those to whom you can entrust the next generation… from tomorrow, you will be the Hokage…!"
And of course those 2 are the DAMN CREATORS OF THE MODERN WORLD