Pharmacodynamic and Pharmacokinetic Variability of a Basal Insulin (0000-168)

Inclusion Criteria: Part 1: * Patient is a male between 18 to 45 years of age (inclusive) at the prestudy (screening) visit * Patient has a clinical diagnosis of type 1 diabetes * Patient must have been treated with insulin since diagnosis and be on a stable dose of insulin * Patient has a Body Mass Index (BMI) of \<=27 kg/m2 and \>18 kg/m2 * Patient has been a nonsmoker and/or has not used nicotine or nicotine-containing products for at least approximately 6 months Part 2: * Subject is a male between 18 to 45 years of age at the prestudy (screening) visit * Subject has a Body Mass Index (BMI) of \<=25 kg/m\^2 * Subject has been a nonsmoker and/or has not used nicotine or nicotine-containing products for at least approximately 6 months Exclusion Criteria: Part 1: * Patient has a history of stroke, chronic seizures, or major neurological disorder * Patient has currently active and untreated clinically significant endocrine, cardiovascular, hematological, hepatic, renal, respiratory, or genitourinary abnormalities or diseases * Patient has a history of hypertension requiring treatment * Patient has a history of neoplastic disease within the past 5 years * Patient is currently being treated with, or has a history of treatment with any oral antihyperglycemic agent * Patient has a history of significant multiple and/or severe allergies Part 2: * Subject has a history of stroke, chronic seizures, or major neurological disorder * Subject has a history of hypertension requiring treatment * Subject has a history of neoplastic disease within the past 5 years * Subject has history of diabetes (Type 1, Type 2 or steroid-induced) or family history of diabetes mellitus * Subject has a history of hypersensitivity to glargine or any of its inactive ingredients