Those whom you meet on this road, you can turn back.

Those who are but starting in this direction you can bid pause and consider how mad it is to suppose that the Temple of True Knowledge should have been built on an isolated and dangerous mountain.

Tell them that although God seems hard, He is not as hard as all that.

Tell them that the Ideals are not a mountain range, but their own plains, where their great cities are built, and where the corn grows, and where men and women are toiling, sometimes in sorrow and sometimes in joy." "I will go," said the Traveller.
And he started.
But he had grown old and weary.

And the journey was long; and the retracing of one's steps is more toilsome than the tracing of them.
The ascent, with all the vigour and hope of life to help him, had been difficult enough; the descent, with no vigour and no hope to help him, was almost impossible.
So that it was not probable that the Traveller lived to reach the plains.
But whether he reached them or not, still he had started.
And not many Travellers do that..