Without the Way, there is no going;
Without the Truth, there is no knowing;
Without the Life, there is no living.

[Sine via non itur;
sine veritate non cognoscitur;
sine vita non vivitur.]

Thomas à Kempis (c. 1380-1471) German-Dutch priest, author

The Imitation of Christ [De Imitatione Christi], Book 3, ch. 56, v. 1 (3.56.1) (c. 1418-27) [ed. Parker (1841)]
    (Source)

The voice of Christ commenting on His own words in John 14:6, "I am the way, the truth, and the life."

These precise words are most common translation over the years, also rendered (with varying punctuation and capitalization) by Bagster (1860), Anon. (1901), Croft/Bolton (1940), Daplyn (1952), and Creasy (1989).

(Source (Latin)). Alternate translations:

Without a way no man may go, and without the truth no man may know, and without life no man may live.
[tr. Whitford/Raynal (1530/1871)]

Without a way, no man can go; without the truth, no man can know; and without life no man can live
[tr. Whitford/Gardiner (1530/1955)]

Without the way there is no going aright, without truth there is no knowing aright, without life there is no living at all.
[tr. Page (1639), 3.56.3]

Without the Way can be no Walking; without the Truth no knowledge; without the Life no Living.
[tr. Stanhope (1696; 1706 ed.), ch. 61]

Without the way which I have opened, thou canst not return to paradise ; without the truth which I communicate, thou canst not know the way; and without the life which I quicken, thou canst not obey the truth.
[tr. Payne (1803), ch. 44]

Without the way, there is no journeying; without truth, there is no knowledge; without life, there is no living.
[tr. Dibdin (1851), 3.51.1]

Without the way thou canst not go, without the truth thou canst not know, without the life thou canst not live.
[tr. Benham (1874)]

Without the Way, there is no progress; without the Truth, there is no knowledge; without the Life, there is no living.
[tr. Sherley-Price (1952)]

Without a way, a road, there can be no going along it; without truth, no object of knowledge; without life, no living.
[tr. Knox-Oakley (1959)]

Without the way, there is no travelling, without the truth, no knowing, without the life, no living.
[tr. Knott (1962)]

Without the Way there is no journey. Without the Truth there is no knowledge. Without Life there is no living.
[tr. Rooney (1979)]