Great minds are related to the short span of time wherein they live as are large buildings to the narrow plot of ground on which they stand. Thus large buildings are not seen to their full extent because we are too close to them.

[Zu der kurzen Spanne Zeit, in der sie leben, verhalten sich die großen Geister wie große Gebäude zu einem engen Plage, auf dem sie stehn. Man sieht nämlich diese nicht in ihrer Größe, weil man zu nahe davor steht.]

Arthur Schopenhauer (1788-1860) German philosopher

Parerga and Paralipomena, Vol. 2, ch. 20 “On Judgement, Criticism, Approbation, and Fame [Über Urtheil, Kritik, Beifall und Ruhm],” § 242 (1851) [tr. Payne (1974)]
    (Source)

(Source (German)). Alternate translation:

Compared with the short span of time they live, men of great intellect are like huge buildings, standing on a small plot of ground. The size of the building cannot be seen by anyone, just in front of it.
[tr. Saunders (1890)]

Great minds are related to the brief span of time during which they live as great buildings are to a little square in which they stand: you cannot see them in all their magnitude because you are standing too close to them.
[tr. Hollingdale (1970)]