I would like to know why "That" is used grammatically.
I wonder if the next sentence is correct.
there is one thing we do know, which is that we are here for the sake of other men
Strange is our situation here upon earth. Each of us comes for a short visit, not knowing why, yet sometimes seeming to a divine purpose. From the standpoint of daily life, however, there is one thing we do know: That we are here for the sake of other men —above all for those upon whose smile and well-being our own happiness depends, for the countless unknown souls with whose fate we are connected by a bond of sympathy.
Email Removed"> Email Removed From the standpoint of daily life, however, there is one thing we do know: That we are here for the sake of other men I expect you are familiar with the pattern "We know that ~", in this case "We know that we are here for the sake of other men ". In the sentence that you quote, the same "that" clause is taken and given in explanation of what the "one thing" is. We know one thing.
New words, one handy idiom, and a 2-minute quiz — delivered to your inbox to keep your streak alive.
Email Removed">Email RemovedFrom the standpoint of daily life, however, there is one thing we do know: That we are here for the sake of other men
I expect you are familiar with the pattern "We know that ~", in this case "We know that we are here for the sake of other men". In the sentence that you quote, the same "that"